A super PAC is attacking former Wisconsin Sen. Russ Feingold for his past votes on partial birth abortion.

The TV ad, which the Reform Wisconsin Fund spent $365,000 to make, shows a newborn child and describes in graphic detail how partial birth abortion works before saying Feingold voted in support of the practice eight times.

A report from The Associated Press said Reform Wisconsin Fund spokesman Chris Martin said the group is spending money only on the Wisconsin Senate race but he later told Roll Call, "Our mission could broaden going forward but don't want to close the door on that."

Amelia Penniman, Feingold's press secretary, hit back and pointed to Johnson's support of a so-called "personhood" amendment and calling his vote to defund Planned Parenthood a "fun vote."

"Sen. Johnson can't defend his record on the economy or his extreme opposition to women’s reproductive health, so he's resorted to hiding behind super PACs and dark money groups to do his dirty work for him," she said. "This desperate attack is just another reminder that if Sen. Johnson stays in Washington, he'll continue to jeopardize healthcare for tens of thousands of Wisconsin women"

Feingold is currently running against Sen. Ron Johnson, who defeated him in 2010. The Rothenberg & Gonzales Political Report/Roll Call rates the race as Tilts Democrat.

Most polling in the race has shown Feingold, who served three terms in the Senate, with a sizable lead.